[02:03:56] Sysfs is a virtual file system supplied by Linux 2.6. It is responsible for exporting information about devices and drivers from the kernel device model to the userspace. It can also be used for configuration. [03:11:42] UnionFS is a filesystem service for FreeBSD and Linux. It incorporates a union mount for other file systems and allows branches to be transparently overlaid, forming a single, reliable file system. A union mount allows several different file systems to be mounted simultaneously.